Object in Putney Road Last Evening?

Did anyone else have to swerve to avoid a tire or similar-looking object lying in Putney Road between Eaton Ave & Vermont Ave around 8pm last night (Monday 4/22)?  We sacrificed a mirror to one of those telephone poles right next to the southbound lane (he ones all scarrd up from being hit by other vehicles, plow blades, etc).  Nothing seen in daylight this morning except mirror fragments by the pole.